Commit 0755c38e authored by Mikita Lipski's avatar Mikita Lipski Committed by Alex Deucher
Browse files

drm/amd/display: prevent reading unitialized links 



[why/how]
The function can be called on boot or after suspend when
links are not initialized, to prevent it guard it with
NULL pointer check

Reviewed-by: default avatarNicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: default avatarPavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: default avatarMikita Lipski <mikita.lipski@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent af6902ec

drivers/gpu/drm/amd/display/dc/dc_link.h

+2 −0
Original line number Diff line number Diff line
@@ -226,6 +226,8 @@ static inline void get_edp_links(const struct dc *dc, 
	*edp_num = 0;

	for (i = 0; i < dc->link_count; i++) {

		// report any eDP links, even unconnected DDI's

		if (!dc->links[i])

			continue;

		if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP) {

			edp_links[*edp_num] = dc->links[i];

			if (++(*edp_num) == MAX_NUM_EDP)